CN201892674U - Test system for methanol content in evaporative pollutants of methanol automobile - Google Patents
Test system for methanol content in evaporative pollutants of methanol automobile Download PDFInfo
- Publication number
- CN201892674U CN201892674U CN2010202544036U CN201020254403U CN201892674U CN 201892674 U CN201892674 U CN 201892674U CN 2010202544036 U CN2010202544036 U CN 2010202544036U CN 201020254403 U CN201020254403 U CN 201020254403U CN 201892674 U CN201892674 U CN 201892674U
- Authority
- CN
- China
- Prior art keywords
- test
- unit
- methanol
- sampling
- automobile
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
The utility model relates to a detection system for evaporative pollutants of an automobile, in particular to a test system applied to a methanol automobile for detecting methanol content in the evaporative pollutants. The test system comprises a sampling unit, an analysis unit and a test unit, wherein the test unit is positioned in a sealed test cabinet; the sampling unit comprises a sampling pump which acquires data of gas in the test cabinet; and the analysis unit comprises a gas chromatograph analyzing the data of the sampling unit. The utility model mainly provides the test system capable of precisely detecting methanol emission in the evaporative pollutants of the methanol automobile and solves the technical problem existing in the prior art that the methanol emission concentration in the evaporative pollutants of the automobile cannot be precisely detected and evaluated.
Description
Technical field
The utility model relates to a kind of detection system of automobile evaporative pollutants, relates in particular to a kind of test macro that detects methanol content in the evaporative pollutants on the methanol vehicle that is applied in.
Background technology
Along with the development of industrial technology, automobile becomes the important walking-replacing tool of people.The fuel of automobile has liquid fuel such as gasoline, diesel oil, methyl alcohol, ethanol, biodiesel at present, also can be gaseous fuels such as dimethyl ether, liquefied petroleum gas (LPG), compressed natural gas, liquefied natural gas (LNG), hydrogen.Because under the methyl alcohol normal temperature is liquid, modes such as accumulating are close with gasoline, diesel, and thermal efficiency height, physicochemical property satisfy motor car engine to be used, so methyl alcohol is one of important vehicle alternative fuel at present.Methyl alcohol is as vehicle fuel, and the use on vehicle has multiple, comprises the use of M100 methyl alcohol, M85 methanol gasoline mixed fuel and methanol gasoline mixed fuels such as low ratio M15, M10.The detection of general automobiles evaporative pollutants has now had special national standard to define.But the automobile of methanol vehicle or use methanol gasoline mixed fuel, the discharge vaporization amount of methyl alcohol in its airtight evaporative emission is one of focus of paying close attention in the industry.How many methyl alcohol discharge capacitys in its evaporative pollutants is, adopts what method and apparatus to detect, and also do not have the conclusion of this respect so far.
Summary of the invention
The utility model mainly provides a kind of test macro that can accurately detect the methyl alcohol discharging in the methanol vehicle evaporative pollutants; Solve the technical matters that existing in prior technology can't accurately detect and estimate for the methyl alcohol concentration of emission in the automobile evaporative pollutants.
Above-mentioned technical matters of the present utility model is mainly solved by following technical proposals: the detection system of the methanol content in a kind of evaporative emission of methanol vehicle comprises sampling unit, analytic unit and test cell; Sampling unit and post-sampling unit before described sampling unit comprises, described test cell comprises a plurality of automobile tests unit that connects in turn; Sampling unit is positioned at the test unit front side before described, and described post-sampling unit is positioned at each test unit rear side, is connected with an analytic unit at the rear side of each sampling unit; Described test cell is positioned at an airtight test cabinet, and the volume of described test cabinet is greater than the volume of automobile to be tested; Described sampling unit comprises the sampling pump of the data of collecting test indoor gas, and described analytic unit comprises the gas chromatograph of the data of analytical sampling unit.In confined chamber, be placed with automobile to be tested, detect by the discharge vaporization of automobile under various states.Earlier automobile is pushed in the test cabinet and test, before each process of the test all earlier once to the gas sampling in the test cabinet, once sampling again after off-test is taken the data of double sampling in the gas chromatograph and to be analyzed, thereby draws the methanol concentration that this process of the test is discharged.System architecture of the present utility model is simple, by front and back double sampling and comparative analysis, gas chromatograph is applied in the detection of automobile evaporative pollutants, has improved the accuracy that detects, and can accurately draw the methanol content in the evaporative pollutants.
As preferably, described test cell comprises the hot dipping test unit that connects in turn and ventilation test unit between daytime.The hot dipping test unit be with methanol vehicle through after the pre-service operation, with the hot dipping test of automobile parking 60min ± 0.5min, gather hot dipping by the test sample unit then and test gas in the forward and backward test cabinet; The ventilation test unit is after soaking car and finishing between daytime, allows the methanol vehicle of test place ventilation test between daytime of 24h ± 6min in 20 ℃～35 ℃, and simulation temperature variation is round the clock carried out sampling analysis to the boil-off gas in the test cabinet then.Through above-mentioned two test units, simulated the discharge vaporization of automobile, thereby can test out the methanol content in the evaporative pollutants of methanol vehicle accurately in each process.
As preferably, be connected with normal temperature environment in the front side of described initial sampling unit and soak car unit and test preparatory unit, described test preparatory unit comprises the chassis dynamometer of simulated automotive vehicle condition, is connected with test cabinet between the ventilation test unit at described hot dipping test unit with between daytime and soaks the car unit.Utilize chassis dynamometer to do the pre-service of vehicle ', the data that test out the like this automobile practical working situation of just can more fitting improves the stability and the accuracy that detect.All being provided with before preparatory unit and between two test cells and soaking the car unit, mainly is that car body is cooled completely, thus the coincidence detection requirement.It is that the automobile Normal Environmental Temperature was placed 12～36 hours for 20～30 ℃ that normal temperature environment soaks the car unit, and it is that automobile is guaranteed that in test cabinet temperature is 20 ± 2 ℃ of following placements 6～36 hours that test cabinet soaks the car unit.
As preferably, described sampling unit comprises that described by-pass valve is connecting the side of airtight test cabinet by the silicone tube by-pass valve that links to each other with sampling pump.Silicone tube improves sealing effectiveness, thereby makes by the gas that comes out in the airtight test cabinet and to have improved accuracy of test by automobile discharge vaporization to be measured.
Therefore, the test macro of methanol content has following advantage in the methanol vehicle evaporative pollutants of the present utility model: in airtight test cabinet automobile is carried out discharge vaporization and detect the accuracy height; To carrying out double sampling before and after each process of the test, utilize gas chromatograph that the methyl alcohol in the sample gas is carried out check and analysis then, finish detection to the methanol concentration in the automobile evaporative emission; Airtight test cabinet is connected by silicone tube with sampling pump, improves the accuracy of sealing and detection.
Description of drawings:
Fig. 1 is the process flow diagram of the test macro of methanol content in the utility model methanol vehicle evaporative pollutants.
Fig. 2 is the synoptic diagram of the test macro of methanol content in the utility model methanol vehicle evaporative pollutants.
Embodiment:
Below by embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment:
As shown in Figure 1, the test macro of methanol content in a kind of methanol vehicle evaporative pollutants comprises that the normal temperature environment that connects in turn soaks car unit 31, test preparatory unit 1, and hot dipping test unit 2, test cabinet soak car unit 3, ventilation test unit 4 between daytime.Sampling unit 5 between test preparatory unit 1 and hot dipping test unit 2 and before being connected to initially, initial preceding sampling unit 5 is serially connected with initial analysis unit 6; At hot dipping test unit 2 and soak between the car unit 3 and be connected to hot dipping test post-sampling unit 7, hot dipping sampling unit 7 is serially connected with hot dipping analytic unit 8; Soaking between car test unit 3 and daytime ventilation test unit 4 and be connected between daytime sampling unit 9 before the ventilation, after soaking car sampling unit 9, be serially connected with take a breath between daytime before analytic unit 10; Be connected with the ventilation post-sampling unit 11 and the post analysis unit 12 of taking a breath between daytime between daytime at ventilation test unit 4 rear sides between daytime.
As shown in Figure 2, automobile is placed normal temperature environment, under 20～30 ℃ of the temperature, after carrying out soaking car and handle about 24 hours, automobile enters test preparatory unit 1, and test preparatory unit 1 is positioned on the chassis dynamometer 13, with the methanol vehicle of test in simulation on the chassis dynamometer 13 after road conditions handle, methanol vehicle is pushed in the airtight test cabinet 14, carry out hot dipping in 1 hour test earlier; Maintain the temperature at 20 ± 2 ℃ then, the car that soaks that carries out about 6 hours is handled; Carry out ventilation test between 24 hour daytime again.Ventilation test unit 4 is positioned at test cabinet 14 between hot dipping test unit 2 and daytime, connecting sampling pump 16 in the side of airtight test cabinet 14 by by-pass valve 15 as sampling unit, in order to improve sealing effectiveness, adopt silicone tube 17 to connect between by-pass valve 15 and the sampling pump 16.The parameter of sampling pump 16 is set relevant parameters according to the difference of the ability of adsorption tube in the sampling pump 16, and the utility model is set the sampling pump flow velocity at 0.02～0.2L/min, and the sampling time is 10～30min, sampling quantity 1～5L.Between hot dipping test unit 2 and daytime, all need the gas in the airtight testing laboratory to be sampled before the ventilation test unit and after the test end of a period with sampling pump, the methanol content of being sampled then with the stripping liquid wash-out, utilize hydrogen flame ionization detector detection methanol concentration then, thereby detect the methanol content in the evaporative pollutants as the gas chromatograph 18 of analytic unit.
Claims (4)
1. the test macro of methanol content in the methanol vehicle evaporative pollutants is characterized in that: comprise sampling unit, analytic unit and test cell; Sampling unit and post-sampling unit before described sampling unit comprises, described test cell comprises a plurality of automobile tests unit that connects in turn; Sampling unit is positioned at the front side of test unit before described, and described post-sampling unit is positioned at each test unit rear side, is connected with an analytic unit at the rear side of each sampling unit; Described test cell is positioned at an airtight test cabinet, and the volume of described test cabinet is greater than the volume of automobile to be tested; Described sampling unit comprises the sampling pump of the data of collecting test indoor gas, and described analytic unit comprises the gas chromatograph of the data of analytical sampling unit.
2. the test macro of methanol content in a kind of methanol vehicle evaporative pollutants according to claim 1 is characterized in that: described test cell comprises the hot dipping test unit of connection in turn and ventilation test unit between daytime.
3. the test macro of methanol content in a kind of methanol vehicle evaporative pollutants according to claim 2, it is characterized in that: be connected with normal temperature environment in the front side of described initial sampling unit and soak car unit and test preparatory unit, described test preparatory unit comprises the chassis dynamometer of simulated automotive vehicle condition, is connected with test cabinet between the ventilation test unit at described hot dipping test unit with between daytime and soaks the car unit.
4. according to the test macro of methanol content in claim 1 or the 2 or 3 described a kind of methanol vehicle evaporative pollutantses, it is characterized in that: described sampling unit comprises that described by-pass valve is connecting the side of airtight test cabinet by the silicone tube by-pass valve that links to each other with sampling pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202544036U CN201892674U (en) | 2010-07-03 | 2010-07-03 | Test system for methanol content in evaporative pollutants of methanol automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202544036U CN201892674U (en) | 2010-07-03 | 2010-07-03 | Test system for methanol content in evaporative pollutants of methanol automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201892674U true CN201892674U (en) | 2011-07-06 |
Family
ID=44222146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202544036U Expired - Lifetime CN201892674U (en) | 2010-07-03 | 2010-07-03 | Test system for methanol content in evaporative pollutants of methanol automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201892674U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108761026A (en) * | 2018-06-04 | 2018-11-06 | 湖南吉利汽车部件有限公司 | Methanol gasoline double fuel or fuel combination vehicle evaporative pollutants measurement method and its device |
| CN110869731A (en) * | 2017-05-19 | 2020-03-06 | 乔治洛德方法研究和开发液化空气有限公司 | Device for treating a liquid to be analyzed |
| CN112946183A (en) * | 2019-12-10 | 2021-06-11 | 堀场仪器（上海）有限公司 | Closed evaporation test bin |
-
2010
- 2010-07-03 CN CN2010202544036U patent/CN201892674U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110869731A (en) * | 2017-05-19 | 2020-03-06 | 乔治洛德方法研究和开发液化空气有限公司 | Device for treating a liquid to be analyzed |
| CN110869731B (en) * | 2017-05-19 | 2023-07-28 | 乔治洛德方法研究和开发液化空气有限公司 | Device for treating a liquid to be analyzed |
| CN108761026A (en) * | 2018-06-04 | 2018-11-06 | 湖南吉利汽车部件有限公司 | Methanol gasoline double fuel or fuel combination vehicle evaporative pollutants measurement method and its device |
| CN112946183A (en) * | 2019-12-10 | 2021-06-11 | 堀场仪器（上海）有限公司 | Closed evaporation test bin |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108181432B (en) | Method for testing full-component emission of motor vehicle exhaust pollutants | |
| Liang et al. | Comparison of PM emissions from a gasoline direct injected (GDI) vehicle and a port fuel injected (PFI) vehicle measured by electrical low pressure impactor (ELPI) with two fuels: Gasoline and M15 methanol gasoline | |
| CA2088030C (en) | Method and apparatus for the automated testing of vehicle fuel evaporation control systems | |
| CN104849068B (en) | The quick on-board emission test method of heavy-duty car | |
| CN104849374A (en) | Non-methane hydrocarbon analysis equipment and method | |
| CN105181343A (en) | Simple on-board emission test system and simple on-board emission test method applicable to heavy truck equipped with OBD | |
| CN201413238Y (en) | Automobile emission detecting system with simple transient working condition | |
| CN101661020A (en) | Test method and test device of emission of methanol automobile exhaust contaminant | |
| CN103383318B (en) | Carbon dioxide harvester in soil | |
| Shen et al. | Real-world emission characteristics of black carbon emitted by on-road China IV and China V diesel trucks | |
| CN201892674U (en) | Test system for methanol content in evaporative pollutants of methanol automobile | |
| CN104807732A (en) | System and method for measuring mercury in atmospheric particulates | |
| CN101986151B (en) | Method for measuring content of methanol in evaporative pollutants of methanol vehicle and device thereof | |
| CN102735799B (en) | A kind of motor exhaust monitoring system | |
| CN112798288A (en) | Portable vehicle-mounted remote emission energy consumption measuring system and method for heavy-duty diesel vehicle | |
| He et al. | The impacts from cold start and road grade on real-world emissions and fuel consumption of gasoline, diesel and hybrid-electric light-duty passenger vehicles | |
| CN117074036A (en) | Fuel consumption test method for heavy hydrogen fuel internal combustion engine automobile based on hydrogen balance method | |
| CN102445247B (en) | Method for measuring fuel consumption of methanol vehicle | |
| CN204731209U (en) | NMHC analytical equipment | |
| Gautam et al. | Measurement of in-use, on-board emissions from heavy-duty diesel vehicles: Mobile emissions measurement system | |
| Lammert et al. | Effect of B20 and low aromatic diesel on transit bus NOx emissions over driving cycles with a range of kinetic intensity | |
| CN109384187A (en) | Refueling nozzle/fuel tank interface oil and gas leakage detection device and method | |
| CN103674771A (en) | Method and device for detecting methanol content in methanol gasoline volatile component | |
| CN108761026A (en) | Methanol gasoline double fuel or fuel combination vehicle evaporative pollutants measurement method and its device | |
| CN205246532U (en) | Automobile exhaust evaluation system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110706 |